diff --git a/web/viewer.css b/web/viewer.css
index 45af921f9a824..059af33ea5ac5 100644
--- a/web/viewer.css
+++ b/web/viewer.css
@@ -478,11 +478,6 @@ body {
   }
 }
 
-.splitToolbarButton {
-  margin: 2px;
-  display: inline-block;
-}
-
 .dialogButton {
   border: none;
   background: none;